Year: 2013
Type: article
Abstract: A bstract We present constraints on decaying and annihilating dark matter (DM) in the 4 keV to 10 GeV mass range, using published results from the satellites HEAO-1, INTEGRAL, COMPTEL, EGRET, and the Fermi Gamma-ray Space Telescope. We derive analytic expressions for the gamma-ray spectra from various DM decay modes, and find lifetime constraints in the range 10 24 − 10 28 sec, depending on the DM mass and decay mode. We map these constraints onto the parameter space for a variety of models, including a hidden photino that is part of a kinetically mixed hidden sector, a gravitino with R-parity violating decays, a sterile neutrino, DM with a dipole moment, and a dark pion. The indirect constraints on sterile-neutrino and hidden-photino DM are found to be more powerful than other experimental or astrophysical probes in some parts of parameter space. While our focus is on decaying DM, we also present constraints on DM annihilation to electron-positron pairs. We find that if the annihilation is p -wave suppressed, the galactic diffuse constraints are, depending on the DM mass and velocity at recombination, more powerful than the constraints from the Cosmic Microwave Background.
Source: Journal of High Energy Physics
Authors: Rouven Essig, Eric Kuflik, Samuel D. McDermott, Tomer Volansky, Kathryn M. Zurek
Language: English
Subfield: Nuclear and High Energy Physics
Field: Physics and Astronomy
Domain: Physical Sciences
Open Access status: hybrid
Estimated APC paid:
Funders: National Science Foundation, U.S. Department of Energy, National Aeronautics and Space Administration, Alfred P. Sloan Foundation, Strong, Israel Science Foundation, Israeli Centers for Research Excellence, Planning and Budgeting Committee of the Council for Higher Education of Israel, Astrophysics Division, Fermilab
Awards: G132386199, G154696372, PARTICLE PHYSICS AT THE COSMIC, INTENSITY, AND ENERGY FRONTIERS, G2371702954, G3581418648, G4112406114, G4845656258, G585908603, G6598239468, G6671297155, CAREER: From the Cosmos to Colliders, ONE OF THE MOST PRESSING AND RELEVANT COSMOLOGICAL QUESTIONS IS ON THE NATURE OF THE DARK MATTER. I PROPOSE A COMPREHENSIVE PROGRAM AT THE BOUNDARY O, PROPOSAL TO STUDY THE PROPERTIES AND INTERACTIONS OF ELEMENTARY PARTICLES, G86560745, G969889393
OpenAlex ID: W2010039371